DictEm is a Dictionary client for Emacs. DictEm is an extremely
customizable. It implements functions
of the client part of the Dictionary protocol (RFC-2229). It widely
uses auto completion and provides powerful API that allows to heavily
extend its functionality. DictEm contacts dictionary server ( it can
be localhost dictd server or any server from the internet) to get get
the information and displays in *dictem* buffer.